Virginia's Declaration of Rights was drawn upon by Thomas Jefferson for the opening paragraphs of the Declaration of Independence. It was widely copied by the other colonies and became the basis of the Bill of Rights.
The ridges found in flexible metal duct create turbulence and will diminish airflow. NEVER use 4 dryer duct or any plastic duct on a range hood installation. The minimum size duct allowed on most range hoods is 3 Â¼ by 10 which is equivalent to 6 round. More powerful hoods require even larger duct sizes up to 10 round. Consult the specifications for the model you have chosen.
This venting kit contains all of the ducting items needed in most standard installations for 7 in. Range Hood vents through the roof. You may need additional lengths of pipe if your installation goes beyond the 70 in. of pipe included in the kit. Also included: 7 in. Heavy duty, black painted, metal roof vent; 7 in.